<!DOCTYPE html>
<html>

	<head>
		<meta charset="utf-8">
		<title>图书管理系统-登录</title>
		<style type="text/css">
			.dlu {
				width: 400px;
				height: 400px;
				margin-left: auto;
				margin-right: auto;
				padding-top: 200px;
			}
			
			.dlu input {
				width: 280px;
				border-radius: 4px;
				border-style: solid 1px;
				margin-top: 10px;
			}
		</style>
	</head>

	<body>
		<div class="dlu">
			<h1>图书管理系统登录界面</h1>
			<form action="app/userlogin.php" method="post">
				账号 <input type="text" name="username" placeholder="请输入账号"><br> 
					密码 <input type="password" name="password" placeholder="请输入密码"><br> 
						<input type="submit"  style="width: 323px;"/>
			</form>
		</div>

	</body>

</html>